#map {
  width: 400px;
  height: 300px;
  background: lightgrey;
  margin: 100px auto;
  position: relative;
}

.food {
  width: 10px;
  height: 10px;
  background: red;
  position: absolute;
}

.snake {
  width: 10px;
  height: 10px;
  background: skyblue;
  position: absolute;
}
